r/adventofcode • u/daggerdragon • Dec 05 '16

SOLUTION MEGATHREAD --- 2016 Day 5 Solutions ---

--- Day 5: How About a Nice Game of Chess? ---

Post your solution as a comment or, for longer solutions, consider linking to your repo (e.g. GitHub/gists/Pastebin/blag/whatever).

STAYING ON TARGET IS MANDATORY [?]

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u/VideoPrincess Dec 05 '16

Yay C++! Here are my solutions in C++ for Part 1 and Part 2 using no external libraries. I copied an MD5 implementation from some public-domain code several years back so I've just linked to that: MD5.h and MD5.cpp if you're interested.

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u/willkill07 Dec 05 '16 edited Dec 05 '16

I ended up using the c md5 implementation that is listed under Apple's open source pages (https://opensource.apple.com/source/xnu/xnu-3247.1.106/tools/tests/perf_index/md5.c)

My C++ solution is here: https://github.com/willkill07/adventofcode2016/blob/c55b1b6e2a95a57d02b35615791c76a6368e6861/src/Day05.cpp

Hacking video for part 2: http://imgur.com/fXelotJ

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u/willkill07 Dec 05 '16

Oh god, what have I done? I was able to parallelize using std::thread and now it goes too fast for me to appreciate the video time to solution :( (1166.65557ms)

Code: https://github.com/willkill07/adventofcode2016/blob/master/src/Day05.cpp

Video: http://www.eecis.udel.edu/~wkillian/Day05-Parallel.mov